If you live in a cold climate like Minnesota, I recommend plastic. Why would someone want metal? It gives you a smooth interior, which means less air turbulence, which means more airflow. The end.
Emil from The Practical Engineer purchased two electric duct fans for this project. A duct fan has a propeller-like rotor fan installed inside a cylindrical duct, and generates thrust by rotating it.
Description: Continental Fan’s AXC In-line Duct Fans are suitable for residential, commercial, and light industrial ventilation applications. AXC fans incorporate a heavy-gauge, drawn steel housing ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results